Sean Harvey
Ansys Employee

Hello,

To follow on to this discussion.  Von Mises is not used for the strength evaluation of laminates/sandwich(of different materials and orientations).  You would wish to use one of the composite failure criteria, with the simplest being max stress or max strain, but there are other that have interactions (Tsai).

Also, I agree with the approach Peter suggested, but one could also use named selections and a handful of oriented element sets and modeling plies to create layups on many parts at once.  So it can handle large assemblies.

Regards,
Sean